*{
    margin: 0;
    padding: 0;
}
body,html{
    width: 100%;
    height: 100%;
}
ul,li{
    margin: 0;padding: 0;
    list-style: none;
}
.container{
    width: 100%;
    height: 100%;
}
/* 左侧导航栏 */
.aside{
    width: 15%;
    position: fixed;
    left: 0;
    height: 100%;
    background-color:#fff;
    color: #000;
}
.aside div{
    width: 100%;
    height: 8%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.aside ul{
    width: 100%;
    height: 100%;
}
.aside ul li{
    width: 100%;
    height: 60px;
    text-align: center;
    line-height: 60px;
    cursor: pointer;
}
.aside ul li.current{
    background-color: rgba(52, 177, 255, 0.2);
    border-right: 5px solid rgb(15,106,177);
    box-sizing: border-box;
    color: #4585BD;
}
  .aside ul li .tab-two{
    width: 100%;
  }
  .aside ul li .tab-two span{
    width: 100%;
    display: block;
    height: 40px;
    font-size:14px;
    text-align: center;
    line-height: 30px;
    color: #000;
}
.aside ul li .tab-two span.text{
    color: #0F6AB1;
}
.aside ul li:nth-of-type(2).current{
    height: 200px;
    transition: height 1s ease;
}

.aside .tab li:first-of-type{
    background-image: url(../images/班级管理.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li.current:first-of-type{
    background-image: url(../images/班级管理蓝.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li:nth-of-type(3){
    background-image: url(../images/用户管理黑u.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li.current:nth-of-type(3){
    background-image: url(../images/用户管理蓝.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li:nth-of-type(4){
    background-image: url(../images/学生档案.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li.current:nth-of-type(4){
    background-image: url(../images/学生当啊蓝.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li:nth-of-type(5){
    background-image: url(../images/日志系统黑.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li.current:nth-of-type(5){
    background-image: url(../images/日志系统蓝.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li:nth-of-type(6){
    background-image: url(../images/审核系统黑.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li.current:nth-of-type(6){
    background-image: url(../images/审核系统蓝.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li:nth-of-type(7){
    background-image: url(../images/项目管理黑.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li.current:nth-of-type(7){
    background-image: url(../images/项目管理蓝.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li:nth-of-type(8){
    background-image: url(../images/日常黑.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}
.aside .tab li.current:nth-of-type(8){
    background-image: url(../images/日常蓝.png);
    background-repeat: no-repeat;
    background-size: 25px 25px;
    background-position: left 25px center;
}

  /* 右侧部分 */
.banner{
    width: 85%;
    height: 100%;
    background-color: #F5F9FA;
    position: fixed;
    right: 0;
}
/* 右侧顶部状态栏 */
.header{
    background-color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 8%;
    padding-left: 30px;
    box-sizing: border-box;
    box-shadow: 2px 2px 8px 2px #ECF0F1;
    margin-bottom: 20px;
}
.header div{
    font-size: 12px;
    opacity: .8;
    color: #000;
}
.header ul{
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: flex-end;
    padding-right: 30px;
    box-sizing: border-box;
}
.header ul li{
    display: flex;
    align-items: center;
    color: #333;
    font-size: 14px;
    height: 100%;
}
.header ul img,.header ul li img{
    width: 25px;
    height: 25px;
}
.header ul li:first-of-type{
    margin-right: 35px;
}
.header ul li:first-of-type img{
    margin-right: 10px;
}
.header ul li:first-of-type p:first-of-type{
    margin-right: 35px;
    box-sizing: border-box;
} 
.main{
    width: 94%;
    height: 92%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}
.main .item{
    width: 100%;
    height: 100%;
}
.main .item .item-two span{
    display: none;
    width: 100%;
    height: 100%;
}

